Pump.



J. T. TRUMBLE.

- PUMP.

Awucanou FiLED APR.8.19!4.

Patented Nov. 30; 1915.

2 SHEETS-SHEET 1.

ammo

pp T. Truxyb ILA L TRUMBLE.

PUMP.

APPLICATION FILED APR. 8(1914.

Patntefl EOV. 30, 1915,

TC) CARBJEEITEJQ,

UNITED sanrns PATENT 'ornlon.

was: T. rnn unnn, or FLINT, nicnroan, ASSIGNOR or ONE-HALF TO a; B. c. HARDY,

,or FLINT, MICHIGAN.

PUMP.

Specification of Letters Patent.

PatentedNom38. 1915.

- Application filed April 3, 191%. Serial N0. 830,329.

T 0 all whom it may concern:

Be it known that I, JOHN T. TRUMnLn. a. citizen of the United'States ,of America, residing at Flint, in the county of Genesee and State of Michigan, have invented certain. new and useful Improvements in Pumps, of which the following is a specifloat-ion, reference being had therein to the accompanying drawings.

This invention relates to pumps especially designed for supplying gasolene or other liquid fuel to the carbureter of an internal combustion engine.

The primary object of my invention is to provide an automatic pump that can be advantageously used in connection with the engine of an automobile for pumping gasolene from a tank or reservoir located at a point below the carburetor of the engine to an elevation from which the gasolene can flow by gravity to the. carbureter. the pump having an auxiliary reservoir into which gasolene is pumped or drawn by the suction in the intake manifold of the engine.

Another object of my invention is .to provide a gasolene pump that is intermittentlyoperated and automatically controlled, whereby at all times a suiiicient quantity of gasolene is maintained in the auxiliary tank or reservoir of the pump to supply the carburetor.

A further object of this invention is to establish a connection between a gasolene tank and the intake manifold of an internal combustion engine vvhereby the suction in the manifold can be utilized for drawing gasolene into an auxiliary tank or reser 'oir interposed in the connectiouat a point above the carbureter of the engine, and tifcn uti lizing a float mechanism for controlling the operation of the pump and consequently the supply of gasolene to the auxiliary tank or reservoir.

With the above and other objects in View the invention resides in the novel construction, combination and arrangement of parts to behcreinafter specifically described and then claimed.

Reference will now be had to the drawings and Fig. 2 is a vertical sectional iew of a pump in accordance with this invention. p The pump comprises a circular base 1 lav-W- ing a bracket 2 by means of which the base 'may be connected to the dash 3 of an automobile 54. The dash 5 constitutes a suitable support and the base 1 is maintained at right angles thereto or in a horizontal position. The base 1 has an upstanding annular flange l and :1 depending annular flange Brazed or otherwise secured to the flange 5 and abutting the base 1 ale the upper edges of a cup-shaped auxiliary tank" or reservoir 6, which has the. bottom thereof provided with an opening 7 and a connection 8 for the coupling 9 of a carburetor tube or pipe 10', which communicates with m a carburetor 50.

The base 1 has a central opening oropenings 11, a spider 12, and a depending hollow member 13 that extends into the auxiliary tank or reservoir 6 and is provided-with airs angular-1y disposed or upwardly directed outlet nipple l i. The outer end of the nip,- ple H has a transverse slot 15 and a seat 16 for a check valve l7. The oheckvalve 17 is in the form of a ball or spherical body 30 and is retained Within the nipple 14 by a cotter pin 18 or other fastening means arranged transversely of the nipple. The nippie 1% and the pin 18,.constitute a cage for the check valve and permit of said valve unseating to allow .gasolene to flow from the hollow member 13 intothe auxiliary tank or reservoir-6.

Seated upon the base 1 and brazed or otherwise secured to'the upstanding flange '25 is interposed between the flange and the cap. I

The cap 23 is provided with a concentric stem having a side connection?! for the coupling 28 of a tube or pipe 29 in connnunication with an intake mi iold 51 of an inend of the rod 33-extends through:aiecess 3a in the top of the stem 26 and said recess communicates with the pump cylinder 19 through the medium ot a port 35. The port 35 and the .iieCeSsBt-are, adapted to place the pump cylf ider 19 in communication with the fitmQSPhBIQillld the upper or outer end of the rod 33 has acap or valvular member 36 adapted to seat upon the stem 26 and close the outer end of the recess 3 L The valvulariniember 36 is adapted to close by gravity and beraised by the action of a float to behereiiiafter referred to. When the valvular member seated to exclude air from thecylinder 19,, it is impossible for gasoleneto flow from the cylinder into the reservoir 6,, but immediately upon the valvular member being raised, the gasolene can openthe check valve 1? and enter the reservoir. The valvular member 36 is suitably secured to the.- i 1p} )er end of the rod 33 and suitably cdnnected to the upper endof the stem 26 is ll-cjap 37 having a small opening 38. The cap 37 is adapted to prevent dirtand foreign matter from entering the recess 34 and eventually reaching the pump cylinder 19. The lower end of the float rod 33 extends through and is guided by the spider 12 and keyed or otherwise detachably mounted upon said rod, contiguous to the lower end thereof, is a collar 39. The collar is adapted to support a hollow cylin drical float l0 arranged in the'puinp cylinder 19, said float having a central tube 41 tlilOHglIWlIlClI the rod 33 extends. The that is of a. less diameter than the cylinder 1%) and is limited in its upward movement relatively to the rod 33 by a sleeve 4L2 keyed or otherwise mounted upon said rod.

The sleeve 42 has the ends thereof pr vided vvlith peripheral flanges l3 and 4:4, the former pserving' as a stop for'the float l0 and the latter as a valvular member adapted to engage the inner side of the ca 3 and seal or close theinner end of the vertical portion 31 {of the angle'port 30. The flange or valvular member, however, does not close iihB'POIlt 35 to the atmosphere, but simply controls the communication between the manifold E31 and the cylinder 19. It is necessary for the valvular member to close the port 30, otherwise, ,ivith the cylinder taking air, the manifold would pull from the atmosphere and it-vvould be impossible to re-' duce, the pressure in the cylinder to that 920 tent ,that gasolene would flow therein from the mainreservoir 52, which is some distance,

from the pump and in a leper plane.

"The capf 23i, ad'acent to the bracket 24,-

has a connection 45 for the coupling 46 of. a tube or pipe 47 connected to Quinlan: tank or reservoir 52 of the automobile,

, The base 1, adjacent to the bracket 2 tlicreof, has an angularly disposed port estalor lisliing communication between the auxiliary tank or reservoir 6, and a. stand pipe 49 supported by the bracket 2 inparallelisin with the pump cylinder 19. The. upperend of the stand pipe a9 is open and permits of gaso-- lene or liquid fuel flowing from the auXiliary tank or reservoir 6 into the carburetor pipe 10, when the check valve 17 is seated or closed. I

As illustrated by full lines, the valvular member 36 is seated upon the upper end of the stem 26, shutting oil the connection to the atmosphere, and supporting the float rod 33 in a lowered position in the pump cylinder 19. By reason of gasolene or liquid fuel having been removed from the auxiliary tank or reservoir 6 and consequently the level of gasolene lowered within the pump cylinder 19, the float -10 rests upon the collar 39, and with the rod iii a lowered position, the valvular member 4-4 of the sleeve all is unseated, thereby establishing coininunication between the pump cylinder 39 and the manifold pipe 25.). l Vith the port 35 closed to the atmosphere it is possible for the suction iii the intake manifold of an iiiternalcoinbustion engine to pump or draw gasolene from the main tank through the tank pipe 47 into the pump cylinder 12-). As gasolene lS'dlflWD into the pump cylinder 19,

the Heat 40 is gradually raisednnd contacts with the flange l3 of the sleeve as, The

sleeve 4-2 and the rod 33 are then elevated i until the valvular member 44 contacts with the cap 23 and seals orcloses the vertical portion 31 of the'angle port 30, thereby shut ting off the connection between the pump cylinder 19 and the manifold pipe The float mechanism assumes a position shown by dot and dash lines and in such position the valvular member is unsealed, thereby placing the pump cylinder 19 iii communication with the atn'iosphere. The check .valve 17 can then be unseated to permit of gasolene fiowing from the "pump cylinder 19 into the auxiliary tank or reservoir 6, and as heretofore stated, the gasolene can readily flow from the auxiliary tank or reservoir 6 by reason-of the stand pipe 49 communicating with the atn'iosphere.

It is apparent from the above that the suction or vacuum Within the pump cylinder tends to hold the valvular member 36 seated during the operation of the pump and that the unse'ating of this member and the seating of the member formed by the flange ll is quickly performed by reason of the vacuuin within the pump cylinder 'i'QSlStlllg the pressure of gasolene below the float until the pressure upon the float is greater than that of the vacuum. at which time there is a snap or rapid movement of the rod 33, which unseats the member 36 and closes the port 31'. The size of the auxiliary tank or reservoir 6 and the pump cylinder 19 is such, that the supply of gasolene therein only necessitates intermittent operation of the pump, which is automatically controlled by the float mechanism within the pump.

During the operation of the pump, should gasolene vapor be drawn through the pipe 29 into the intake 'manifold of an internal combustion engine, this vapor tends to enrich the explosive mixture drawn from the carburetor, consequently the eiliciency of an engine would be materially increased by the installation of the pump, besides the main gasolene tank or reservoir can be conveniently located upon the chassis or in the body of an automobile.

From the foregoing it will be observed that a suiiicient quantity .of gasolene is maintained Within the auxiliarytank or reservoir 6 to supply a carburetor during the operation of the pump and that the check valve 17 or a similar automatic closure is essential to shut oil communication between the pump cylinder 19 and the auxiliary tank or reservoir during the pulling or drawing of gasolene into the pump cylinder by the suction produced in the intake manifold of an internal combustion engine. Furthermore, a float actuated valvular member 42 controls the operation of the pump and a similarly actuated valvular member 36 controls the how of gasolene from the ,pump cylinder to. the auxiliary tank or reservoir.

By reference to Fig. 2 it will be observed that the rod 33 constitutes an axial connection between the valvular members 42 and and a simple means of simultaneously moving said inembersin'the axis of the cylinder 19. .The rod 33 obviates a plurality of connections and devices and would undoubtedly be necessary, if the ports 31 and 3i were out of. alinement, consequently the importance of having these ports in the axis of the cylinder and a rod common to both ports; Furthermore, it will be noted that the main gasolene tank is constantly in communication with the upper end of the cylinder, thus obviating the use of check valves and the necessity of lifting the contents of the cylinder each and every time gasolene is drawn into the tank,

The simplicity of construction entering into the pump is such that the same is free from injury under ordinary conditions and does not require any attention after having been installed.

While in the drawing there is illustrated a. "preferred embodiment of the invention, it isrto-be understood that the structural gine having a manifold, a carburetor communicating with the manifold of the engine, and a gasolene supply tank of a cylinder having the upper end thereof constantly-1n tank, said cylinder having an axial port in communication with the atmosphere and an axial port adapted to communicate with the manifold of said engine, whereby pressure can be reduced in said cylindehto cause gasolene to flow from said supply tank in said cylinder, an auxiliary tank forming part of said cylinder and adapted to receive gasolene therefrom, a rod extendingthrough both of said axial ports, and means on said rod operatable in said cylinder by the ;a so lene therein for alternately closing the axial ports of said cylinder to control the supply of gasolfene to said cylinder and the passage of gasolene from said cylinder to said auxiliary tank.

2. The combination with a gasolene engine having a manifold, a carbureter communicating with the manifold of the engine, and a gasolene supply tank, of a pump comprising a base, a cylinder carried thereby, an auxiliary tank supported by said base adapted to communicate with said cyli .ler and receive gasolene therefrom, z. cap mounted upon said cylinder and ha* ug a port constantly in communication \vi- 1. said gasolene supply tank, said cap having an axial port formed therein in communication with the atmosphere and an axial port adapted to communicate with the manifold of said engine whereby pressure can be re duced in said cylinder to cause gasolene to flow from said supply tank into said cylinder, and vertically alining float actuated means within said cylinder adapted to alternately close the last mentioned ports of said cap and controlthe supply of gasolene through said cylinder and through the auxiliary tank thereof.

The combination with a gasolene engine having a manifold, a carbureter communicating with themanifold of the engine, and a gasolenefsup'ply tank, of a cylinder having the upper end thereof constantly in communication with said gasolene supply tank, said cylinder "having an axial port in communication with the atmosphere and an axial port adapted to communicate with the manifold of said engine whereby pressure can'bc reduced in said cylinder to cause ga-solene to flow from said supply tank into said cylinder. an auxiliary tank in communication with the atmosphere and adapted to communication with said gasolene supply 'eohnmmicate with said cylinder. and anto In testimony whereof I afilx my signature flm'ativally actuated Vertically alining \alvuin presence of two Witnesses.

lar members movable in the Same Erection JOHN T TRUMBLE' adapted to alternatel close the axxal ports I of said cylinder and control the supply of Vitnesses:

gasnlene to said cylinder and to the auxil- KARL H. BUTLER,

inry tank thereof. ANNA M. Don.

M will 

